Disk-sharpener



P. RINK. A

DISK SHAHPENER. --APLICATWN FILED )UNE l5 1,920. 4 1,5 i93b96'7'gv4 Patented Oct. 18, 1921,

' 'Z SP IETS-SHEET l.

wwwrun w/mfssfs I 9 Arron/:frs

P. HINK. msx SHARPENER. APPLICATION FILED JUNE I5, i920.

Patented 061'. 18, 1921..

2 SHEETS-SHEET 2.

,INVENTOR CUM' * `UNIT1121) l STATES PATENT o :PETER RINK, OF CRESCO, IOWA.

Price.

DISKSHARPENER.

To. all wltomp z'lmayeconcern.'

f Beitknown that ;I,.Pn'rnR Emma citi Zen of. the f United States, land, a resident of Crescoin the county ofrHoward Iand State oflovva, have invented vcertainfnevv and useful lImprovements ,in Disk-Sharpeners, of which, the following is ,a specification.

My invention is yan improvement in disk Sharpeners, ,and has forits object to provide `a device ofthe character specified, by means ,of Whichthediskspfan implement, ,as for instance a harrovv, cultivator, or 4the like ,may `be `.easily `sharpened While in place,

Without the necessity :of removingthe same, and .Without the necessity of .any `motive 4povverother ythan thatprovided by the 4act of drawing ytheharrow :or .cultivator ahead with team or tractor. .I-nthe drawings:

n `ligure y1 isa top Vplan view of the .sharp- .enen Y f Athat .end .of yeach vhandle member remote fromthe grip is forked as shownin Figs. l andQ. The` arms t ofthe 'fork at the `-handle member 2 carry journal .pins 5, Whose aXes are` parallel-.With each other, and yrollers 6.,.are-journaled on 'the pins. Thus the ,rollers Irotate vongparallel .axes spaced apartlfromeach other. c

yThe arms 7 ofthe Ifork of the handle member 1; diverge from each .other ata point farther removedirom the.A pivotal Vcminection 8v ofthe handle membersthenthepoint of divergenceof thearms, ot the fork Vof .the

.handle member 2,.,andthe saidarms 7 are n ycurved ias shown, .land are adapted to en gage about the shaft upon which the disktn hesharpenedismonnted. f Y

Means is yprovidedin connection ,with the handle .members .v1 land' y,2.or. sharpening y.the

udisk Yerlese-itlle .Said-means beinein the "form eff .Getter blades @1159, which are detect-if l.cutting ledge of the disk.

Specification of Letters Patent. vPatente(11001;, 1S, 7.192,1, Applicationledjfnne 15, 1920. `Serial No..389,072.

ably connected with the handle members l andj2- on that sideof the pivotal connection which is `adjacentto theforks 4 and7. The 55 being elongated in cross section Tas fshovvn, 65

andA having their long .axes transverse to the body. rThe arms l2 `tit on each side ofthe blade, .and bolts 13 areipassed through the clip, and `through registering `openings in `thehandle member, and they rarelengalgfed 70 by the nuts on the'opposite side of they yhandle member from the clip. y 'Thns the ,blade maybe `fadjusted rtoward .and from the blade 8.

In use the arms 7 of-the fork ofthehandle 75 member lvare engagedfvviththe shaft, vand `the disk, is rotated-Withtheprollers 6in -conf tact With theface ofthe .disk remote-from the fork arms-7,.,and With the l cutter blades incontact with the opposite faces ofthe 80 Referring toFig.

3 itfxvillbe Iseen that the engaginglvedges lor `thebladesincline with respect to each other,

divern'ingh from the pivotal connectiom. so

that they Will smoothly engage thebeveled 8,5 y,edges of the disk, land YWill scrape and cnt away the metaLto-br'ingfthe edge of the l disk to the desired degree of sharpness.

Therollers 6 -by their .engagement .with

:the disk, `canse the device to ride properly againstthedisk, and reducewfrietion. means ef the clip `11 the angle of the blade 9 maybe changed.v By-loosening. the nuts ofthezbolts 13, thebar ll may be rocked laterally. and with it the blade 9. V.The op- 95 ,pcsite edges of the blades 8 and .9 are oppo- ,sitely sharpened or beveled, :so that they may-bey-reversed. vThereversal of the ,de-

vice permits the.-disks :on Aboth sides ofthe Tharrovv to` be k sharpens cnefface ofltheedggaand the other sharpened. One blade Jblade removes the Wire edge produced by .thelactionfQfftheffrstlelade. leaving the perte@ comitiva It will be understood that the improved sharpener is stationary and the disks rotated, and all of the labor involved in sharpening the disk is furnished by the motive power of the implement in which the disk is used. The disks are in fact sharpened While the harroW or other implement is in use.

In the improved Sharpener, one blade sharpens While the other blade removes the Wire edge produced by the action of the first blade,'thus leaving the edge in perfect condition. Y

I claim:

1. A device of the character specified, comprising a pair of crossed' pivotally connected handle members, each of the said members being forked at one end, one fork being spaced apart farther from the pivotal connection than the other fork, and said first named fork being adapted to engage the vsupporting shaft of a series of disks t one face of one of the disks, rollers journaled on the arms of the other fork for engaging the opposite face of the said disk, and means supported by the handlesbetvveen the forks and the pivotal connection for engaging and sharpening the opposite faces of the edge of the disk, said means comprising blades held on the handle members, said blades being adjustable relatively to the faces of the disk. i

2.-A device of the character specified,

. comprising a pair of crossed pivotally connected handle members, each of the said members being'forked at one end, one fork being spaced apart farther from the pivotal connection than the other fork, and said first named fork being adapted to' engage the supporting shaft of a series of disks, at one vface of one of the disks, rollers journaled on the arms of the other fork for engaging the opposite face of the said disln'and means supported by the handles between the forks and the pivotal connection for engaging and sharpening the opposite faces of the edge ofthe disk, said means comprising blades held on the handle members. y

3. A device of `the character specified, comprising a pair of crossed pivotally connected handle members, each of the said members being forked'at one end, one fork farther vfrom the pivotal other fork, and said first being spaced apart connection than the named fork being adapted to engage the supporting shaft of a series of disks', at oneV face of one of the disks, rollers journaled on the arms of the other fork for engaging the face" of the said disk, and means and the pivotal connection for engaging and sharpening the opposite faces of the edge of the disk.

4.-. A Vdevice of the character specified,

disk.

bers having at one end means for engaging the supporting shaft of a series of disks, the

other handle member having rollers for eny gaging the opposite face of the disk being operated upon, said handle members carrying sharpening means for engaging each side of the edge of the disk.

6. A device of the character specified,

comprising a pair of pivotally connected f adapted to extend on opdisk to be sharpened, one means for engaging the handle members, posite sides of a member carrying shaft carrying the disk, the other member y carrying means for engaging the disk to steady the device, and both members carrying cutter blades for engaging edge of the 7. A device of the character specified, comprising a pair of handle members pivotally connected and carrying blades for yengaging the opposite facesofthe edge of the disk to be sharpened, one of said handle members carrying means for engaging the shaft supporting the disk to besharpened, for holding the blades at kthe proper distances with respect to the shaft, the other handle member carrying means for engaging the adjacent face of the disk to steady the support.

8. A device of the character specified, comprising a pair of handle members pivotally connected. and carrying blades for simultaneously engaging the opposite faces of the edge. of the disk to be sharpened, one of said handle members carrying means for (engaging the shaft supporting the disk to for engaging the shaft supporting the disk to be sharpened. v y

10. A disk Sharpener, comprising a cutthe disk for sharpening the'same, and a cutter simultaneously engageable with the other 12s ter engageable with one face of the edge of face of the edge of the disk for removing the Wire edge incident to the sharpening action of the first-named cutter.

11. A disk sharpener of the character described comprising a pair of crossed pivotally connected members, a cutter carried by one of said members and engageable with one fece of the edgeof the disk to sharpen the same, and a cutter engageable with the other face of the edge of the disk for re- 10 moving the Wire edge incident to the sharp- PETER RINK. 

